<!DOCTYPE html>
<html>
<head>
	<style>
	img { padding:10px; }
	div { color:red; font-size:24px; }
</style>
	<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
	<p></p>
<script>
var $para = $("p");
$para.prop("luggageCode", 1234);
$para.append("The secret luggage code is: ", String($para.prop("luggageCode")), ". ");
$para.removeProp("luggageCode");
$para.append("Now the secret luggage code is: ", String($para.prop("luggageCode")), ". ");
</script>
</body>
</html>